zfs-clone —
clone snapshot of ZFS dataset
zfs |
clone
[-p
]
[-o
property=value
]…
snapshot
filesystem|volume |
See the
Clones section of
zfsconcepts(7) for details. The target dataset
can be located anywhere in the ZFS hierarchy, and is created as the same type
as the original.
-o
property=value- Sets the specified property; see
zfs
create for details.
-p- Creates all the non-existing parent datasets. Datasets created in this
manner are automatically mounted according to the
mountpoint property inherited from their
parent. If the target filesystem or volume already exists, the operation
completes successfully.
Example 1: Creating a ZFS
Clone
The following command creates a writable file system whose initial contents are
the same as
pool/home/bob@yesterday.
#
zfs
clone
pool/home/bob@yesterday
pool/clone
Example 2: Promoting a ZFS
Clone
The following commands illustrate how to test out changes to a file system, and
then replace the original file system with the changed one, using clones,
clone promotion, and renaming:
# zfs create pool/project/production
populate /pool/project/production with data
# zfs snapshot pool/project/production@today
# zfs clone pool/project/production@today pool/project/beta
make changes to /pool/project/beta and test them
# zfs promote pool/project/beta
# zfs rename pool/project/production pool/project/legacy
# zfs rename pool/project/beta pool/project/production
once the legacy version is no longer needed, it can be destroyed
# zfs destroy pool/project/legacy
zfs-promote(8),
zfs-snapshot(8)